Here's the basic pronunciation rules for German:
a: ah as in the a in father
e: a sort of cross between the English short e and the English long a
i: a sort of cross between the English short i and the English long e
o: the English long o
u: the Englihs long u (as in the oo in root)
b:same as English
c:English hard c
d:same as English
f:same as English
g:English hard g
h:is sounded (like the h in hat)
j:like the y in yet
k:same as English
l:same as English
m:same as English
n:same as English
p:same as English
q:as far as I know, same as English
r: I think it's supposed to have a sort of guturral role, if you can, but its fine if you say it the same as English
s:same as English
t:same as English
v:like the f in fat
w:like the v in vest
x:same as English, as far as I know
y:same as English, as far as I know
z:the ts sound
ä: a cross between the English a in cat and the English a in mat
ö: sort of like the ir in stir, but not exactly
ü:a cross between the short i and short u. Difficult to explain
ß:Like the s in sat
ai:like the y in my
au:like the ow in cow
äu:like the oy in employ
ei:like the y in by
ie:like the e in me
st:when at the begining of the word, sht
ch:sort of like the ch in the Scottish word loch
